United nations. (1988). Desertification control bulletin: A Bulletin of world events in the control of desertification, restoration of degraded lands and reforestation. UNEP.
Чикаго маягийн жагсаалтUnited nations. Desertification Control Bulletin: A Bulletin of World Events in the Control of Desertification, Restoration of Degraded Lands and Reforestation. Nairobi: UNEP, 1988.
MLA ишлэлUnited nations. Desertification Control Bulletin: A Bulletin of World Events in the Control of Desertification, Restoration of Degraded Lands and Reforestation. UNEP, 1988.
Warning: These citations may not always be 100% accurate.